Fire-alarm and watch-service system.



.INm 839.873; PATBNTED JAN. 1, 1907.

J. MoFELL.

FIRE ALARM AND WATGH SERVICE SYSTEM. APPLICATION FILED DEO,12, 1905 4 Wv 4 I 9 4 (J wqrceruice :1

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UNITED STATES PAT NT "OFFICE.

JUD'SON MoFELL, OF CHICAGO, ILLINOIS.

FlR E-ALARM AND WATCH-SERVICE SYSTEM,

Specification of Letters Patent.

Patented Jan. 1, 1907.

T anti whom it may concern:

Be it known that I, J UDSON MGFELL, a citirelates to improvements inthat t e fire'-alarm signals are received and recorded by a paratus notaffected by the transm1ss1on o watchmens signals;

A further object of my invention is to provide such a system wherein theline-circuits are under constant test.

, annunciators, or t ably 1 driven by sa'id motor, a motor-control-lingdevice 13,'a'nd an automatic switch 14,'asso 'ciated with themotor-controlling device for Another object of my invention is toprovide in a signal-system non-interfering transmitters'; and yetanother object ofmy invention'is to pr0vide,in conjunction withsuchnon-interfering boxes or transmitters, signaling devices for indicating,at any suitable point or points, b the energization-of lights,

box or group of boxes in transmitting a fire-. signal.

. With aview'to attaining these and other objects, which will become aparent to'those shilledin the art from the/fol owing description, takenin conjunction with the accompanying drawings, my invention consists inthe combinations of devices, features of construction, andarrangementsof parts hereinafter moreparticularly pointed out, andspecified in the claims.

. In the drawings, Figure an alarmfbo'x with 1 an elevation of beassociated parts of. a fire-alarm and watch-service system. Figs.- 2, 3,and 4 are I Throughout the figures like'numerals of reference referqalways to like parts. f'Inth'e drawings, indicates in general atransmitter-box comprising a motor 11, suitdrive'n, acircuit-interrupting device 12,

actuation thereby.

watch-service systems, and

elike, the operation of any its cover removed, showing diagrammaticallythe circuit connections I and vdetails of parts of the transmittermechan- 1 ism.

The transmitting mechanism proper and motor which I have herein shownmay be of the ordinary district-box type, the motor being spring-drivenand comprising a suitranged to be set for operation by a suitable handle15, associated with an arbor 1-6 of the train, the trainbeing arrangedwhen properly conditioned and freed for operation to actuate asignal-wheel 17 of the signaling device 12, withwhich-is associated forcontrol thereby a spring-pen 18' and an anvil 19, the signaling devicesherein shown being of the open-circuit type. Preferably the pen 18 isformedof a metal strip bent to form two leaves, the point of the penbeing at the angle of the joined leaves. v

I preferably connect with the arbor 16 a switch-arm 20, bearing themovable member of a switch 21, shown as acontact-plate 21', arranged tocoact with the separated springs 22- 22, of a line breakin and cut-outswitch to establish an electrica connection therebetween when the box isin normal'or run-down condition,- I also provide, preferably upon thesame shaft 16, an arm 23 which may conveniently be made integral withthe arm and which constitutes part of the motorcoiitrolling connectionwith the non-intervided with a beveled or inclined end portion 23,constituting part of the motor-controlled, switch-releasing means 'to bedescribed, as may best beseen in Fig. 2.

.24,'ndicates a pin carried by the lever-arm 23 and arranged m a slot26, made in the head 25 of a vertically-disposed bar 25, the lower endof which is provided with an antifriction- .roller 27, bearing upon alever 28, in the hub of which is provided a keyaperture 28- for thereception of a watchmans key. A limitation-stop 29 is provided forlimiting the throw of thelever 28, so thatit will bea arent that thewatchmanv by turning t e ever 28 with his key may raise thebar 25,

a'short are only, sufficient tocondition the transmitter-train to causethe signaling devices 12 to transmit-ashort signal-#say one round of thewheel 17. It will be understood,furthermore, that the handle 15 whenpulled down" to contact with its limitationstop, .(indi ca ted--at 30)conditions the transmitting mec of rounds of the wheel 17-say five orsix rounds. 1

hanism to transmit a plurality able gear-train (not shown in detail) aref'crencernechanism, said arm,. 23;being proand thereby rockthe lever-arm23 throu h Associated with the reciprocablc bar I provide themotor-controlled two-pole switch 14. inch 1 will now describe.

31 indicates a switch -arm pivoted as at 32 and provided with alaterally-projecting pin 33, arranged within a yoke 34, carried by thebar 25. The yoke 34 is so arranged that when the .arm 31 is in itslowermost position and the bar 25 in normal position the lower extremityof the yoke is out of contact with the pin 33, said lost-motionconnection being such that the bar 25 may be lifted to the full extentto which it may be elevated by the watchmans lever 28 without moving theswitch-arm 31. The yoke 34 is furthermore of such longitudinal extentthat when the switch-arm 31 is in its uppermost position the bar 25 maydescend to its lowest position without being stopped by the pin Theswitch 14 comprises a metallic plate 35, of arcuate form, mounted uponsuitable insulating blocks 36 and bearing in insulated relation theretotwo metallic springs 37 37,

either of which may be electrically connected with the switch-blade bythe interposition of the end of switch-arm 31 between the plate andspring.

38 i dicates a weight for normally main.- taining the switch-arm 31 inposition to efleet contact between the spring 37 and plate 35.

39 indicates in general a mechanical latch for maintainingthe switch-arm31 in raised position when elevated by the motor parts into engagementwith said latch. Specifically, as best shown in Fig. 2, 40 indicates alatch-lever provided with a nose 40, beveled on one side, carried by arock-shaft42, mounted in suitable bearings 43, the latch 40* )assingbeneath the metallic plates 35 and rave ing its nose arranged to takethrough an aperture 35 therein. 44 indicates a spring arran ed 'to tendconstantly to maintain the late in position with its nose projectingabove the surface of the plate 35. 45 indi cates a releasing-arm carriedby the upper extremity of shaft 42 and arranged for cooperation with thebeveled or inclined end 23 of the lever 23. Thus when the lever 23 is innormal position, assumed at the completion of each signaling operationof the box, the trip-arm 45 is moved to rock the shaft 42 and depressthe lat-ch 40, so that its nose 40 is below the level of plate '35 butwhen the lever-arm 23 is moved upwardly, removing its inclined extremity23 from beneath the tri i-arm 45, the tension of spring 42 throws thelatch to latching position. It will be apparent now that when the handle15 of the transmitter is moved to send a true-fire signal the latch 39is thrown to latching position, and the parts are so proportioned thatby the I movement of the rod .25, occasioned by the full movement of thehandle 15, the switcharm 31 is lifted to the position shown in: dottedlines 111 F 1g. 1, where it is engagedby 1 the nose 40 of the latch andlocked against' the return to normal position until the latch isreleased by the'return of lever 23 to its normal position at the end ofthe signaling operation.

While. a mechanism like that heretofore described is susceptible ofconnection in many specific circuits to accomplish the re sultshereinafter set forth, I have for illustration only shown the box asconnected in acircuit such as that described in my prior patent, No.797,907, dated August 22, 1.905.

Specifically, 46 indicates a central source of energy, such as anelectric battery, from one side whereof ext-ends a line-wire 17,including a watchmans recorder 48, and thence extending in seriesthrough the pens 18 of the successive boxes on thecircuit, the wire 47from the last box being. brought back to the central station to ahigh-resistance magnet 49, the armature 4Q where-of, normally held inattracted position by the magnet, constitutes'an annunciatorwdrop orpart of a telltale system, as describcdin my prior patent.

From the opposite side of the battery a wire 50 extends through thefire-signal-receiving devices, illustrated as a bell 51 and a register52, and thence extends to binding-post 55 of the first box, to which isconnected the contact-spring 2 heretofore described. The oppositecontact-spring 22 is connected to the binding-post 56, whence the wire50 extends to the next box and inlike manner through the entire series,said wire 50 being run back to the central station and being connectedto the opposite extremity of the coil of'electromagnet 50. whenever thebox is operated the line-circuit is broken between the binding-posts 55and 56 of the then operating box by the removal of the plate 21 oiswitch 21 from contact with the springs 22 22 and that the watchsignalrecorder and the fire-signal gong are respectively connected in the lineor opposite sides of said 'break'that isto say, one between the breakinthe line and one side of the battery and the other between the break in.

the line and the opposite side of the-battery. For watch service Iprovide a connection paralleling the wire 50 from a point beyond the boxmost remote from central to a point between the battery and thefire-signal-receiving devices, such connection being illustrated at 53and preferably including a switch 54, which may, ifdesired, be anautomatic time-switch arranged to close during tact-plate 35 isconnected by wire 58, through a magnet-coil to be described, withwire59,

which extends to the anvil 19 of the circuitmtermpting devices. It willbe apparent It will nowbe apparent that 37, thencei'by wire SS -to thebind is set by the operation of the handle -15 to sees-7s now that asthe transmitter stands in normal condition with the pen 18 and anvil 19in separated relation and the lever 20 in the position shown a closedcircuit is established from the battery throughthe'fire-signal-receiving devices, the series of cut-out switches 21 inthe signal-boxes, the high-resistance magnet 50, and back through thewire 49 and the watch-signal-receiving device 48 to the op osite side ofbattery 46. f

t will be seen that the circuit. just described includes the magnet 49,which is of such high resistance that the current-flow through thecircuit is insufficient to actuate the registers or othersignal-receivinginstruments, The parts are so constructed, however, thatif the magnet 49 be short-cirouited by the establishment of a bridge oflower resistance between wires 47 and 50 the signalreceiving devices arecaused to commence operation. When now a watchman actuates the box bythe control-lever 28, as heretofore describ d, the signal-wheel 17iscaused to make one-revolution or round, and the line-circuit isautomatically broken by the switch 21.

Assuming the, switch 54 to be closed, it will be seen'thatwhenever' thepen 18 drops into a notch in the signal-whee and makes contact with itsanviljlQ a circuit is established, as follows: from battery .46 by wire47 through the recorder 48 120 the pen'18, thence throu h anvil 19 andwires 59 58 to the .con-

tactate 35 and the switch-arm 31 to spring re and back over theline-wire 50, to s unt-wire 53, and throng seen thatin this circuit thefire-signaling apparatus is not included and the hi h-resistance magnetis also'cut out, so that t e record of the watchmans report is receivedonly the instrument 48. By this arrangement amfenabled to placefire-alarm apparatus at any desired points throughout the areato beprotected for the purposeof alarming occupants and notifying those inauthority of the existence of fire, ,with "the, assurance that suchinstruments will not be actuated by theuse of the transmitters forwatch-service pur-. poses, and at the same time I am able to receive thewatch-signals at any desired point or station. When, however, thetransmitter send its full or-,fire signal, the lost-motionswitchcontrolling mechanism automatically throws the switch-arm 31 touppermost or dotted-line position,

where, as heretofore described, it is. automatically latched and helduntil the return of the motor parts to normal or run-down position. Inthe interval before th'e restoration of the switch;the

signal-wheel- 17 'niakes its predetermined number of revolutions orrounds, and each time the pen 18 dr a circuit is establis transmitterand wit h the last said connection to the opposite sideof, the battery.Itwill be both directions. s intoa notchof awheel. ed, as follows: fromthe,

battery 46, by wire 47 through the receiving 7 apparatus 48 to the pen18, thence to the anvil 19 and through wires 59 and 58 to theswitch-plate 35., throu h the swi ch-arm 31 to the spring 37, and t enceb e and binding-post 55 to the side 0 wire 50, extending back throughthe signaling instruments 52 and 51 to the opposite side. of thebattery. It willthus be seen that a fire-signal is invariably received"by the fire-signal registers and gong and the specific embodiment shownthe watch-signal recorder 48 as well.

48, it may obviously be included in the wire 53 insteadof wire 47 to beout of the firealarm signaling-circuit;

I prefer that in the system described the "transmitter benon-interfering, and to this end I provide, in conjunction with themotorcontrolling devices of the box, a disabling mechanism forautomatically preventing the.

box from operating whenever some other transmitter nearer the centralstation is transmitting its si a1 or for stopping any olding theuntransmitted portion of its signal whenever any transmitter nearer thecentral station is started in operation'while the more remotetransmitter is sending its signal. To this end I provide 'inthe signalin-circuit of each box an electroresponsive ev ice and arrange 'a motorstopping. or disabling device to be controlled thereby, saidmotor-disabling device being timed in its niotor-sto ping operation, sothat -when conditio'ne by the electroresponsivedevice tostop the motorit delays its function during a predetermined period. Specifically, 61indicates an electromagnet included between the wires 59 and '58 of thesignaling-circuit of the transmitter, said magnet being provided with anarmature 62, carried-b a lever 63, *arranged to moye towardan from thebar 25 at right angles to said bar. Pivotally mounted upon the lever 63for movement therewith into or out of-operative relation to the bar 25and for limited movement thereon in a lane parallel to bar 25 is a pawl64, provide with a nose 65, and prefera 1y having arms 66 straddling theextremity of lever 63, said pawl being maintained, as by a weight 67,out of contact with the lever-arr'n-63. 68 indicates a rack carried bythe under side of the bar 25', with which the pawl is adapted tocooperate, as shown in Fi 4, to. prevent downward movement of the barbe- {end thepoint wherethe pivoted pawl is rought into close contactwith its supporting-arm 63. Adjusting-screws 69 and 70 are provided inthe pawl 6'4 and weight 67', re

spectively, to .vary the throw oft e pawl in It will be understood thatthe parts are so arranged that when the armature 62 is attractedbythemagnetfil the llf itbe desired to receive nothing but watch-reports onthe recorder ICC nose 65 of the pawl is thrown entirely out of the pathof the rack 68, so that the bar 25 arm 63, thereby stopping the movementof the pawl and through its inimovability stopping theoperation of themotor through the *instrumentality of the controlling-rod 25 and lever23. It will be understood, furthermore, that the time that it takes tomove the pawl 64 to motor-stopping position from the position itoccupies when it first engages the rack is greater than the intervalduring which the transmitting instrumentalities open thesignaling-circuit in transmitting any -signalthat is to say,the'interval is longer than that which the signaling-wheel occupies inmaking the longest space required between characters in its signalingoperation. If desired, the lever 63 may also be provided'with abell-clapper 71,, cooperating with any suitable gong 72', supported inoperative relation thereto, so that the gong may be struck everytime'the lever-arm 63 rises.

"In conjunction with the parts described I provide means forshort-cireuiting the pen and anvil 18.19 each time the motor is stoppedby the operation-of the pawl 64, and tothis'e nd I provide springs 74and 75, connected, respectively, by wires 76 and 77 to the wires 59 and47, respectively, and ar-- ranged upon theweight-arm 67 a metallicspring 78, adapted to be elevated by the pawl 64to make contact with andconnection betweensprmgs 74 and 75.

its signal.

Under normal conditions it will be v,observed the looking or disablingdevice stands in position for engagement with the rack of'the bar 25,and as soon as the box is'set inmotion for an ordinary signalingoperation :the depression of the pawl 64 commences. The period of timenecessary to depress the'pawl into contact with its carryingarm 63 beinglonger than the longest interval between the notches of thesignaliiigwheel, however, the motor is not stopped when the first notchin the wheel comes opposite pen 18. Instantly, therefore, when the pen18 drops into the notch the electromagnet 61 in the signaling-circuit isenergized, attracting its armature and throwing the disablingpawl out ofengagement with therack 68. As soon .as the circuit is again broken thepawl reengages the rack, and this operation continues as longas the boxis transmitting It Willfbe apparent, however, that if some box'nearerthe central station on the line the box under consideration (which toavoid confusion I may term box. 1 be transmitting a signal, either aservice or a fire-alarm signal, the he broken between said box No. 1 andthe central station, so that no current passes through transmitting-box(which I may call box has completed its signaling operation and thecontinuity of the line betweenthe box 1. and the central station isrestored, the said box 1 received current through its coil 61, throughthe short circuit around the pens last described, even though the wheel17 has stopped in position to separate contacts 18 and 19, so that themagnet attracts its ftlillik" ture and instantly releases the motormechanism for furth'eroperation. It will thus be apparent that atwhatevercondition of its signaling operation a box maybe it will bestopped or disabled before it'has completed round, when'any box nearerthe central star tion commences to'transmit its signal, while any boxremote from the central station, pulled after a-nearerboxhas commencedits signal, is not permitted to start its signal until after the boxnearer central station has completed its signaling operations. In thisway it is assured that in whatever order the boxes may be pulled oractuated asubstantially complete signal is certainto be received fromeach box, although the signal from any box remote from central stationmay be temporarily interrupted ,to permit the transmission of a completesignal from a box closer to central station.

I also prefer to provide, in conjunction with a system such as thatdescribed ,means for indicating visually, as by lamps or annunciators,at suitable supervisory stations the. box. or section of boxes whence afire-sign al .is-transmitted. This is particularly desirable inconjunction with the watch system, as by placing a battery of lampscorresponding to the various sections of the building or other districtto be protected, adjacent the station of each Watchman. the sectionwhence an alarm is turned infor the particular box, if desired, maybeinstantly shown to the watchman by the action of the corresponding lightor annun'ciator withoutthe delay incident to the transmission of acomplete signal and without'the installation of a recorder at eachwatch-station. To this end I provide, preferably, a separate battery 80,connected on the one side, as by a wire 81, with the wire 41, and on theother sideconnected by-wire 82, including a high-resistance coil 83'with e binding-post 84 of thebox to be supervised, whence extends a wire85 to a spring 86, constituting one of a pair arranged to beelectrically connected by a plate 88, carried by the switch-arm 31, theremaining spring 87 being connected by Wire 89 with the wire 77, which,it will be remembered, is connected to the wire 47, so that a completecircuit is established through the wires in the order described, as longas the switch-arm 31 is depressed. a

The high-resistance magnet has associated therewith an armature 90,adapted, when released by the magnet, to close contact between twocontact-points 91 ,91, included in one line-wire 92 ot'anincandescentlight-circuit, whereof 93 is the opposite line- ,wire, 94the source of power, and 95 95 the bridged lights.

Obviously the li hts 9 5 may be located at the different watc ansstations or at other suitable points to indicate at "any number ofplaces the operation of the.

box whenever theswitch-arm 31 is moved.

I If more than one box be arranged in a section and it'be desired toindicate only the section and not the'particular' box whence the signalemanates, it obvious that the springs 87 88 of the remaining boxes-willbe looped in the wire 82 in series.

While I have herein-described in some de tail specific devices andarrangements of parts adapted for the practice of my invention, I do notdesire to be understood as limiting my invention in its broader aspectto theparticular construction shown and described will be apparent thatnumerous -modifications might be made in the specific construction andarrangement of. parts without dep'arture from the spirit and scope ofmyinvention, and it will be apparent that the specific character andarrangement of the cir cuits might readily be changed without departurefrom the spirit of my invention.

ent of the United'States, is-

1. In a fire-alarm watch-service system,'a

mitting a watch signal, and .with. another" signal-receiving instrumentwhen transmitting a fire-signal.

2. In a fire-alarm and watch-service-sys tem, a plurality ofsignal-receiving instruments, a transmitter adapted and arranged foractuation to transmit a watch-signal and to transmit a differentsignal'for fire-alarms, connections for establishing a circuit.including the transmitter and certain of the. signalreceivinginstruments and excluding pther signal-receiving instruments forwatch-sig naling purposes, and means for automatically varying theconnections to include said excluded receiving instrument in asignalingcircuit with the transmitter when the transmitteris actuated totransmit a firealarm signal. 3

In a fire-alarm watch-service system, a plurality of signal-receivinginstruments, 0. transmitter'adapted to be actuated to transmit awatch-signal, or a difIerent-fire-a larm signal, connection for.establishinga normal circuit including said transmitter and excludingcertain signal 'receiving instruments,

and means controlled by the transmitter for automatically varying thecircuit connections to include said excluded signal-receiving instrumentin a signal-circuit with the transmitter.

4. Inc; fire-alarm and watch-service system, a transmitter,signal-receiying instruments, a switch, and connections normallyestablished by said switch including receiving instruments in signalingrelation to the V transmitter, open connections controlled by saidswitch, for connecting certain other signal-receiving instruments insignaling relation to the transmitter, means controlled by thetransmitter for operating said switch.

5. In a fire-alarm and watch-service system, a signal-transmitter, adouble-throw switch connected therewith for actuation thereby, asignal-receiving instrument ar-- ranged and adapted for connection insignaling-circuit relation with the transmitter when the switch is innormal position, and another signal-receiving instrument arranged andadapted for connection in signaling-circuit with the transmitter whenthe switch is thrown to opposite position by the actuation of thetransmitter.

'6. In a fire-alarm and watch-service system, a transmitter involvin amotor, signal I ing devices, means for con itioning the mo Having thusdescribed my invention, what I claim, and desire to secure by LettersPattor for a certain amount of movement to transmit a shortwatch-signal, signaling de- I I vices gor conditioning the motor for agreater amount of movement to transmit a long firenormally havingconnection through the switch for Si naling relation with thetransmitter, and t e other being arranged for signaling connectlon withthe transmitter when the switchis actuated by the longer movement of themotor; I

7. In a fire-alarm and watch-service system, a transmitter involving amotor, a means for conditioning the transmitter to transmit'awatch-signal; another means for conditioning the transmitter to transmita fire-alarmsignal,' two signal-receiving instr'u-' merits, a switch fornormally establishing signaling-circuit connections between thetransmitter and one signal-recciving device, erable to establish circuitconnections inc uding the excluded signal-receiving device in signalingrelation to the transmitter, and

switch-controlling means operably associated with the means forconditioning the transmitter to transmit a, fire-alarm signal, arrangedto be functionally unaffected by the operation of the means forconditioning the transmitter to transmit a watch-signal.

8. In a fire-alarm and watch-service system, a signal-transmitterinvolving a motor,

normally open contacts of said switch, adapted to be closed by movementof said switch to establish a signaling-circuit including the lastsaidsignal-receiving instrument and the transmitter, means for conditioningthe transmitter to transmit one signal without moving the motor andswitch connection beyond the limits of the lost motion permittedtherein, and means for conditioning the box to'transmit another signalarranged to move the switch -lever to functionally operate the switch'tovary the circuit connections.

9. In a fire-alarm and watch-service system, a central source ofcurrent-supply, linewires extending from opposite sides thereof, asignal-transmitter providing means for automatically breaking 4 one sideof the line when active, said transmitter.involving also a coacting penand anvil, one connected with theunbroken side of the linefand the otheradapted and arranged for connection through a suitable switch with thebroken side of the line on either side of the break made in thetransmitter, the switch, a signal-receiving instrument in the side ofthe line to be broken by the transmitter-switch, connections forshunting the break and said signaling-receiving instrument, whereby whenthe transmitter-switchis thrown to connect its signaling pen or anvilwith the side of the broken line remote from the source ofcurrent-supply, a

circuit may be established through the unbroken line the transmitter penand contact,

the switch and said shunt connection, to the exclusion of .the saidsignal-receiving instrument, and a second signal-responsive instrumentincluded in the signahng-circuit last described.

10. In a system of the character described, a source of current-supply,line-wires 47, 50, acircuit-breaking switch, a signal-transmittercontrolling said switch, said transmitter comprising a motor,make-and-break devices, connection between one side of themake-anthbreak devices and the wire 4.7. connection between the otherpart of the make devices and the poleof adouble-throw switch, saidswitch, operating connections between the arnroi said switch and thetransmitter-motor, connection between the opposite contacts of the saidswitch and opposite terminals of the'line-breaking switch, a si'naLreceiVing instrument in the side of the l ine adapted to be brokenby the linebreaking switch, a shunt around-the linebreaking switch andthe-signal-receiving instrument, and asecond signal-receiving1nstrument, in a suitable part of the'circuit established through saidshunt.

11. In a system of the character described,

a transmitter involving a motor, a doublethrow switch 14, andlost-motion connections between a suitable part of the motor mech-.

anism and the switch-lever, substantially as described, y

12. In a system of the character described,

atransinitter involving a motor, a double-- throw switch comprising aswitch-arm arranged. to be moved by a motor part from normal to abnormalposition, means for latching the switch-lever in said abnormal osition,and means, controlled by the motor, ibr releasing said latching means.

-].3. In a system of the character described, a transmitter com rising amotor, a lever 23 associated with t e motor part, doublethrow switch 14comprising a switch-lever 31, lost motion connection between theswitch-lever 31. and lever 23, a latch 39 for latching the switch-leverinv abnormal position, said latch being associated with one of thesystems ofparts movable with the lever 23, to automatically release theswitch-lever 31 when lever 23 stands in normal position.

14. In a signaling system, a transmitter comprising circuit-interruptingdevices and a motor therefor, a signaling-circuit, an electroresponsivedevice in the signaling-circuit,

motor-stopping means for stopping and maintaining themotor againstmovement when otherwise conditioned for operation, said means beingdefinitely timed in relation to the operation of thecircuit-interrupting device, and movable to operative or inoper ativeposition, and said means being controlled by the electroresponsivedevice.

15. In a signaling system a transmitter comprising circui t-i nterrupting devices, and a motor thereiona signaling-circuit, means formaintaining the motor against movement when otherwise conditioned foroperation, timed in relation to the circuit-interrupting devicestooperate and stop the motor after a definite movement oi? the motor part,and an electroresponsive device in the signaling-circuit controllingsaid motor-stopping means.

16. In a signaling system, a transmitter having a make-and-break deviceand .a motor therefor, a signaling-circuit, electrorespon movement ofthe motor on y after the main tenance of certain conditions intheelectromagnet for a redetermined interval timed in relation to't eoperation of the motor.

17. In a signal system, a transmitter comprising a motor andcircuit-interrupting devices, a signaling-circuit, anelectromagnet insaid circuit, a pawl carried by said electromagnet arranged when thearmature is in one position for engagement with a part movable with themotor, said pawl being arranged for a limited degree of movement withthe coaoting moving member before stopping the motor.

18. In a system of the character described, a transmitter comprisingaunotor, circuit-interrupting devices, a signaling-circuit, anelectromagnet in said circuit, a pawl associated with said armature forbodily movement thereby, arranged for limited movement in another plane,anda rack-rod arranged to be moved by the motor disposed for coactionwith the pawl when the latter is bodily moved to one electromagnet.

ber-wheel driven thereby, make-and-break devices comprising an anvil,and a pen, said pen being composed of two leaves electricallycontinuous, and a normally charged circuit including the leaves of said.pen in series therewith. I

20. In a system of the character described, a primary circuit,signal-transmitters therein, a normally closed circuit including ahighresistance magnet, a switch controlled the A transmittcr'for openingsaid normally closed circuit, and a normally openannunciator-cirresistance magnet.

In testimony whereof I hereunto set my hand in the presence of twowitnesses.

J UDSON MGFELL. In presence of- MARY l ALLEN.

19'. In. a signal-transmitter a motor, a nu mcuit controlled by thearmature of said highposition by the armature of the

